Class: SC::Builder::JavaScript

Inherits:
Base show all
Defined in:
lib/sproutcore/builders/javascript.rb

Overview

This build is used to process a single javascript file. It will substitute any calls to sc_super and sc_static() (or static_url()). It does NOT product a combined JavaScript for production. See the Builder::CombinedJavaScript for more.

Instance Attribute Summary

Attributes inherited from Base

#entry

Instance Method Summary collapse

Methods inherited from Base

build, #initialize, #joinlines, #read, #readlines, #replace_static_url, #sc_static_match, #static_url, #writeline, #writelinebinary, #writelines

Constructor Details

This class inherits a constructor from SC::Builder::Base

Instance Method Details

#build(dst_path) ⇒ Object 



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# File 'lib/sproutcore/builders/javascript.rb', line 18

def build(dst_path)
  lines = ""
  target_name = entry.target[:target_name].to_s.sub(/^\//,'')

  if entry[:lazy_instantiation] && entry[:notify_onload]
  lines << ";
if ((typeof SC !== 'undefined') && SC && !SC.LAZY_INSTANTIATION) {
  SC.LAZY_INSTANTIATION = {};
}
if(!SC.LAZY_INSTANTIATION['#{target_name}']) {
  SC.LAZY_INSTANTIATION['#{target_name}'] = [];
}
SC.LAZY_INSTANTIATION['#{target_name}'].push(
  (
function() {
"
  end

  code = rewrite_inline_code(read(entry[:source_path]))
  code = handle_debug_code(code)
  lines << code

  # Try to load dependencies if we're not combining javascript.
  if entry[:notify_onload]
    lines << "; if ((typeof SC !== 'undefined') && SC && SC.Module && SC.Module.scriptDidLoad) SC.Module.scriptDidLoad('#{target_name}');"
  end

  if entry[:lazy_instantiation] && entry[:notify_onload]
    lines << "
}
  )
);
"
  end

  writelines dst_path, lines
end

#handle_debug_code(code) ⇒ Object

Strips or replaces @if(debug) blocks, depending on build mode.



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# File 'lib/sproutcore/builders/javascript.rb', line 65

def handle_debug_code(code)
  code.gsub(/\/\/\s*@if\s*\(\s*debug\s*\)([^\0]*?)\/\/\s*@endif/) {|match|
    if CONFIG[:load_debug]
      $1
    else
      "\n"
    end
  }
end

#localized_strings? ⇒ Boolean

Returns true if the current entry is a localized strings file. These files receive some specialized processing to allow for server-side only strings. – You can name a string key beginning with “@@” and it will be removed.

Returns:

  • (Boolean) 


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# File 'lib/sproutcore/builders/javascript.rb', line 60

def localized_strings?
  @lstrings ||= entry[:localized] && entry[:filename] =~ /strings.js$/
end

#rewrite_inline_code(code) ⇒ Object

Rewrites inline content for a single line



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# File 'lib/sproutcore/builders/javascript.rb', line 76

def rewrite_inline_code(code)

  # Fors strings file, remove server-side keys (i.e '@@foo' = 'bar')
  if localized_strings?
    code.gsub!(/["']@@.*["']\s*?:\s*?["'].*["']\s*,\s*$/,'')

  # Otherwise process sc_super
  else
    code.gsub!(/sc_super\(\s*\)/, 'arguments.callee.base.apply(this,arguments)')
    code.gsub!(/sc_super\((.+?)\)/) do
      SC.logger.warn "\nWARNING: Calling sc_super() with arguments is DEPRECATED. Please use sc_super() only.\n\n"
      "arguments.callee.base.apply(this, #{$1})"
    end
  end

  # and finally rewrite static_url
  replace_static_url(code)
  code
end